Sandoz Gmbh

Tomahawk, Inc.

Frederick D Kinney

Violeta F Munteanu

David A Lupyan

Gregory S Bobrowski

David F Factor

John W Brook

Andrea M Young

Celeste L McCallen

Gregory C Guecia

Donald R Lane

Jose A Melendez

An active steel repassivator for the rehabilitation of chloride contaminated reinforced concrete structures and a method for the application of same is disclosed. The active steel repassivator is comprised of a continuous phase, a distributed phase, and/or an aqueous solution of an amine. The continuous phase, also known as the carrier phase, is selected from organic strong volatile bases, salts of weak volatile acids and a non-ionic surfactant. The distributed phase includes an anion containing vanadium in the +4 or +5 state of oxidation. The aqueous solution of the amine acts as a co-inhibitor in the composition.

Active steel repassivator for corroded steel in chloride contaminated reinforced concrete structures

An active steel repassivator for the rehabilitation of chloride contaminated reinforced concrete structures and a method for the application of same is disclosed. The active steel repassivator is comprised of a continuous phase, a distributed phase, and/or an aqueous solution of an amine. The continuous phase, also known as the carrier phase, is selected from organic strong volatile bases, salts of weak volatile acids and a non-ionic surfactant. The distributed phase includes an anion containing vanadium in the &plus;4 or &plus;5 state of oxidation. The aqueous solution of the amine acts as a co-inhibitor in the composition.

A corrosion inhibiting admixture for concrete is disclosed comprising a combination of organic (amines) and inorganic (nitrites) fractions that provide a synergistic effect when present at a specific ratio. Such a synergistic effect occurs when the amine:nitrite ratio (% by weight) is between 1.5 to 2.5 resulting in the admixture providing excellent corrosion inhibiting capabilities.

Corrosion inhibiting admixture for concrete

A method of rapidly forming in place a cementitious structure comprising mixing a cement composition with an amount of a water soluble citrate effective to accelerate the setting of the cement in the presence of sufficient water for hydraulic setting of the cement, and delivering the resulting composition while fluid to the place for forming the cementitious structure.

Rapid setting cementitious compositions and method

Cementitious compositions

Cementitious compositions containing fly ash

A method of reclaiming leftover ready-mix concrete comprising the steps of: (1) retarding the hydration of the unused portion of concrete returned from a job site; and (2) after the desired retarded period adding a hydration acceleration agent to restore the concrete to a settable state.

Methods and compositions for reclaiming concrete

A method of reclaiming leftover ready-mix concrete comprising the steps of:

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Broadview Heights, OH, United States of America

Frederick D Kinney